An excellent choice for cucumber and small melons, the J-2 seed roller has 2 half- moon shaped holes. Spacing is adjustable from 12-28” apart depending on seeder sprocket combination. Seeder rollers have slots/holes to cup the seeds to allow for evenly spaced plantings. Due to the half-moon shape of the cup it may plant more than one seed at a time. Made from anti-abrasion plastic to prevent build-up of static electricity that causes seeds to stick together. This item is shipped directly from our supplier, please allow 7-10 business days for delivery.